Water tank waterproofing in Alqurayyat: before buying or handover

Prepared by the technical team · editorial review · last updated 13 November 2026 · Sources

Why water tank waterproofing differs in Alqurayyat

The centre of Alqurayyat sits about 497 m above sea level (SRTM open elevation data). Team note on Alqurayyat: Kashf teams serve this city and its nearby districts with the same documented inspection standard: device-based leak detection without demolition, a written report, and a clear scope before any work begins..

Picture a family who has just agreed to buy a villa in Alqurayyat. The house looks solid, the garden is green, and the rooftop water tank seems fine from the outside. Yet once they move in, they discover damp patches near the base of the walls, a hairline crack running along the tank's edge, and a leak that only shows after the first heavy rain. Problems like these are common in homes where the water tank and roof were never properly sealed, and they are far easier to deal with before the sale closes than after the keys are handed over.

The local facts matter here. The centre of Alqurayyat sits about 497 m above sea level, which means the area is elevated and generally drains well, but it does not make a property immune to water ingress. Rooftop tanks, roof slabs and wet areas still need proper protection, and the cost of that protection depends on the work involved. Tank internal coating typically runs SAR 25–60 per m², liquid roof waterproofing SAR 8–25 per m², and bitumen membrane SAR 15–35 per m². Crack injection, which is often needed where a tank wall or slab has split, is priced at SAR 40–120 per metre. Knowing these ranges lets a buyer judge whether a seller's quote or a property's condition is reasonable.

Start by asking for the tank and roof history, including any previous repairs or recoating. Inspect the tank interior and exterior for cracks, flaking or staining, and check the roof for ponding and worn surfaces. Next, ask for an estimate for each affected area using the per-square-metre or per-metre rates above, and agree on who pays before handover. Then confirm the work is finished and tested, with a water test in the tank and a visual check after rain. Finally, keep written records of every treatment so the next owner knows what was done and when it needs attention again.

Before buying or taking over a property, an inspection gives you findings in writing before you sign.

When do you need water tank waterproofing?

The following signs are worth checking before they grow:

• A tank that leaks after testing
• Deposits and flaking inside the tank
• Unusual colour or taste in the water

The most common causes

• Damaged old coating — we check this before anything else.
• Cracks in the walls or floor — we check this before anything else.
• A common cause: construction joints.

Tools we use in Alqurayyat

The steps in order

1. Emptying and ventilation: The tank is emptied and ventilated before entry.
2. Cleaning and preparation: Loose material is removed down to a sound surface.
3. Crack treatment: Active cracks are treated first.
4. Coating layers: A material intended for drinking-water tanks is applied.
5. Disinfection and fill test: The tank is disinfected and the level is monitored after filling.

Facts and costs — Alqurayyat

Common questions about water tank waterproofing in Alqurayyat

What we advise against

• Using a material that is not intended for drinking water

The written outputs

The written output: the material name, its batch number and the fill-test result. The report is numbered and can be checked with its verification code.